Electric switch.



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Patented July 18, 1905.

PATENT OFFICE. i

MONROE GUE'IT, Oi HARTFORD, (JONNEP'IICUT, ASSIGNOR TO THE HART & HEGEMAN MANUFACTURING COMPANY, OF ilAR'l'FUlil), CONNIC J" ICUT, A CORPORA"ION OF CONNECTICUT. Y

ELECTRIC SWITCH.

SPECIFICATION' fOrming part of Letters Patent No. 794,936, dated July 18, 1905.

Application and November 1,1904. Serial No. 230,897.

To all whom it inmy concern.- j

Be it known that l, Mormon GUa'rr, aeitizen of the United States of America, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Electric Switches, of which the following is a specification. v

The invention relates to electric switches in general, and is particularly adaptable to what" Figure 1 is a plan view of the base-plate.

Fig. 2 isa detail view of the rack and pinion, showing the push-button in section, Fig. 2" is a side elevation of the pinion, showing the spring-arm. Fig. 3 is a plan and side elevation of the spring-plate. Fig. 4 is a plan and side view of the spring detent-plate. Fig. 5 is a detail plan view showing the collocation of the locking-lever, the stop-lever,tl1e springplate, and the stop-plate. view of the poles. Fig. 7 is a general plan view of the assembled switch. Fig. 8 is an edge view looking from the bottom of Fig. 7.

Referring to they drawings, n denotes the base, which supports the switch mechanism and which may be suitably mounted, as on a block of insulating material a. This base supports a spindle I), mounted so that it is free to oscillate or turn forward and backward in said base. Fixedly mounted on' the spindle b wardly-projectingspring-arm c. The pinion and moved by the push-button (l' and has a slot 1!", which terminates in a cam-opening J.

Loosely mounted on the spindle immedi' atelyabove the pinion is the spring-plate 1',

Fig. 6 is a plan having thedownwardly-projeeting springarm 0'; which normally overlies the springarm 0' on the pinion c. This spring-plate'has 5 a tripping projection e. the purpose of which will be more fully described hereinafter. The spring-plate has also the peripheral notches 1:" to receive the downturned fingers f on the 'detent-plate f, thus securing said dctent-platc to said spring-plate. This detent-plate has the spring-detents f', adapted to engage teeth on the stop'plate g.

The stop-plate g carries the poles i and is loosely mounted on the spindle above the spring detent-plate. It has peripheral notches formed, as shown, by the teeth g, the teeth g being the ones which are engaged by the spring-detents f' to form a driving connection between the spring-plate e and the poles 5 g. Pivoted on the base is the lever I, having apin l projecting from its under side into the slot d in the rack (l and having an arm carrying a. tooth l', which engages with the notches in the periphery of the stop-plate. 7 The stop-lever 9- is also mounted on the base and has a stop projection r, which is thrown into the path of movement of the tooth g by the tripping projection e on the spring-plate e to'determine the amount of movement of the stop-plate and poles at each throw of the switch. A pin a on the base 0 projects into the slot d in the rack (l to guide its movement.

A- spring s is coiled about the spindle b, 9 with its ends lying on each side of the springarms 0' e'. A second coil-spring x' has gone end in engagement with the spring-arm on the pinion and its other end-engaging a'stationary part. a

- The operation of the device is as follows, the parts beingshownin their normal positions in Fig. 7, where it will be seen that the tooth/"on the arm of the lever I is in-engagesment with f one of the notches in the stop- 9 plate, and consequently thatthe spring-plate v' is held against movement becausepf its conmotion with the stop-plate through the detent-plate f. It will also be seen that the pin 7 on the lever I rides in the straight part of the slot d in the rack d. Pressure on'the push-button moves the rack down and turns the pinion, the spring-arm o" carrying one end of the spring i: around,"winding it up on the spindle. When the pin 1' rides in the camslot a3, it throws the lever Z to the left and disengages the tooth from the stop-plate, at which time, the spring 8 having been sufliciently compressed, the poles and stop-plate, the detentplate, and the spring-plate are thrown by said spring. As the spring-plate moves around its tripping projection e strikes in the stop-plate g, the trip projection e on the. spring-plate throwlng the lower end 'of the stop-lever r out of the path of movement of the stop-plate, the parts returning to their normal positions (shown in Fig. 7) ready for operation again in the manner above described.

It will be noted that the only continuouslyrotating parts of this mechanism are the poles and the stop-plate connected therewith, the detent-plate, spring-plate, pinion, and spindle having merely an oscillating movement, the rack and push-button having a recipro eating movement, and thelevers Z and 0' having a rocking movement.

I am aware that the structure as herein described may be modified and that the shapes orconstruction of some of 'the'parts can be altered without departing from the spirit of my invention.

I claim as my invention 1' 1. In an electric switch the base, the oscil:

lating spindle loosely mounted therein, a rack havingapush-button, a pinion secured tosaid spindleand meshing with-Saidraclnpoles, and driving connections between said pinion and said poles.

2. In an electric switch combination the mounted on the spindle, a rack meshing with the pinion, a push-button on the rack, means for holding said poles stationary during the initial movement of the rack and pinion, a spring having one end in engagement with the pinion whereby said spring is made tense during the initial movement of the rack and pinion, means for releasing the rack, and a second spring to return the parts to normal position. V

' 4. In an electric switch in combination the base, the oscillating spindle mounted therein, the pinion secured to the spindle, poles loosely mounted on the spindle, the rack meshing with the pinion, the push-button on the rack, stops secured to said poles, a pivotally-supported lever having an arm in engagement with said stops, forward driving connections between the pinion and the poles, aspring having one end in engagement with the pinion and the other end in engagement with the poles, means for disengaging said lever from the stops, and aspring to return the parts to normal position.

5. In an electric switch the base, the oscillatingspindle mounted therein, the pinion, se-. cured to the spindle and having aspringarm, aspring-piate loosely mounted on the spindle and having a spring-arm, a detent-plate secured to said spring-plate, a'stop-plate loosely mounted on the spindle and adapted for engagement with said def ant-plate, poles secured to said stop-plate, a rack in engagement with said pinion and having a cam-slot, a push-button on said rack, a pivotally-supported lever having one arm in engagement with the stops on the stop-plate, and a pin cooperating with said cam-slot, a spring having its ends lying.

on opposite sides of the spring-arms on the pinion and spring-plate, and a second spring to return the parts to normal position.

6. In an electric switch the base, the oscillating spindle mounted therein, the pinion, sedared to the spindl and having a spring-arm,

a spring-plate loosely mounted on the spindle stop'to determine the amou'nt of movement of the ies ateach turn.

7. n an electric switch in combination the base, the oscillating spindle mounted therein,

' .a pinion secured to said spindle, poles loosely mounted on the spindle, a rack in engagement with the pinion, a push-button on the rack, a

spring-plate loosely mounted on the spindle In tes-tirnony whereof I aflix my signature in above the pinion, astop-lever carrying a stop presence of two Witnesses.

adapted to cooperate with said poles to limit r v the amount of movement at each throw, and MONROE 5 a trip projection on said spring-plate cooper- Witnesses:

ating with said stop-lever, substantially as de- GEO. B. VALID,-

scribed and for the purposes set forth. I D. S. KREIMENDAHL. 

